------------[ cut here ]------------ WARNING: CPU: 2 PID: 43 at arch/x86/include/asm/pgtable.h:404 pte_uffd_wp arch/x86/include/asm/pgtable.h:404 [inline] WARNING: CPU: 2 PID: 43 at arch/x86/include/asm/pgtable.h:404 try_to_migrate_one+0x19d4/0x36b0 mm/rmap.c:2256 Modules linked in: CPU: 2 PID: 43 Comm: kcompactd0 Not tainted 6.8.0-rc7-syzkaller-00142-g3aaa8ce7a335 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:pte_uffd_wp arch/x86/include/asm/pgtable.h:404 [inline] RIP: 0010:try_to_migrate_one+0x19d4/0x36b0 mm/rmap.c:2256 Code: 89 e7 e8 4f dd 0e 00 e9 16 f8 ff ff e8 d5 47 b4 ff 31 ff 4c 89 ee e8 db 42 b4 ff 4d 85 ed 0f 84 e4 09 00 00 e8 bd 47 b4 ff 90 <0f> 0b 90 e8 b4 47 b4 ff 48 83 cd 04 e9 65 f7 ff ff e8 a6 47 b4 ff RSP: 0018:ffffc9000069f330 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffea0000a02d80 RCX: ffffffff81d79d15 RDX: ffff888018728000 RSI: ffffffff81d79d23 RDI: 0000000000000007 RBP: d7ffe7fffafe9202 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000003 R12: 0000000000000400 R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000800 FS: 0000000000000000(0000) GS:ffff88802c400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00f07b020 CR3: 000000000d378000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rmap_walk_anon+0x228/0x580 mm/rmap.c:2599 rmap_walk mm/rmap.c:2676 [inline] rmap_walk mm/rmap.c:2671 [inline] try_to_migrate+0x2ba/0x300 mm/rmap.c:2328 migrate_folio_unmap mm/migrate.c:1244 [inline] migrate_pages_batch+0x10c7/0x2c60 mm/migrate.c:1675 migrate_pages_sync mm/migrate.c:1841 [inline] migrate_pages+0x1b31/0x27d0 mm/migrate.c:1950 compact_zone+0x1dcb/0x3f90 mm/compaction.c:2554 proactive_compact_node+0x118/0x1d0 mm/compaction.c:2814 kcompactd+0x712/0xd80 mm/compaction.c:3130 kthread+0x2c6/0x3b0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243